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GREYUIT [131]
2 years ago
5

What was the procedure during the first successful vaccination?

Biology
2 answers:
netineya [11]2 years ago
4 0
The smallpox vaccine, introduced by Edward Jenner in 1796, was the first successful vaccine to be developed. He observed that milkmaids who previously had caught cowpox did not catch smallpox and showed that inoculated vaccinia protected against inoculated variola virus
Mekhanik [1.2K]2 years ago
4 0
Sheeeeeeeesssshhhhhhhhh
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Why is the study of weather important to our lives everyday?
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What is the definition of bioaccumulation
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What does GMO stand for. Explain what it is in your own words.
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3 0
3 years ago
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Now it’s your turn to take on the role of a paleontologist, or a scientist who studies fossils. You will try to combine informat
Jobisdone [24]

The oldest fossils present at the bottom of rock layer whereas the youngest fossils are present in the top layer.

<h2>Rock layers from oldest to youngest</h2>

The rock layers that is located farthest from the ground surface are considered as the oldest rock layers and rock layers that are closest to the ground surface are considered as the youngest. A fossil is the remains or traces of plants and animals that lived long ago.

<h3>Presence of fossil</h3>

Those fossils which are present at the bottom of the rock layers are considered as the oldest fossil followed by the upper layer's fossil and so on. The fossils present at the top layer are the youngest fossils so we can conclude that oldest fossils present at the bottom of rock layer whereas the youngest fossils are present in the top layer.

Learn more about rock layer here: brainly.com/question/14545004

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